I am knitting a shawl, and the Increases I was using were creating a hole, I need a left leaning, and a right leaning increase. which ones don't leave a hole/
I'm not sure which increase you were using, but with a few of them that leave holes you can twist the stitch and it usually closes it just fine. That being said take a look at the increases in this sample and see which you like the look of best.
You can look at M1R and M1L on the Increases page. Shawls usually use a YO to make holes on purpose, but you can use another increase.